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J Dent:预备、切合、粘接对CAD/CAM冠体外性能和抗断裂性的影响

2017-07-24 MedSci MedSci原创

这篇研究的目的为了评估(a)预备设计、(b)磨改过程的拟合参数和(c)胶结类型对CAD/CAM复合材料牙冠分离和稳定性的影响。

这篇研究的目的为了评估(a)预备设计、(b)磨改过程的拟合参数和(c)胶结类型对CAD/CAM复合材料牙冠分离和稳定性的影响。

研究选用拔除的人磨牙按照牙齿轮廓(R)或非原形(NR)进行牙冠预备。数字化处理后,全轮廓冠按照最佳(OF)或简化(RF)拟合参数进行磨切。研究总共对112颗冠进行磨切,其中2种为复合材料Lava Ultimate (L)和Grandio Blocs (G)牙冠,1种为陶瓷牙冠作为参考对照。随后,牙冠通过自粘接结合剂胶结(SE)或粘合(A)。水浴浸泡后,对牙冠实施热循环和机械负荷(TCML)。在水浴浸泡和TCML过程中失败的冠修复体通过SEM进行观察和分析,存留的冠修复体负载检测断裂情况。

结果显示,L冠仅在R/OF/A条件下得以存留。G冠在OF/A 和R/OF/SE条件下未发生分离。经过验证,存留的L冠平均破裂值为1227N (NR/RF/A)和1534N (R/OF/A),而G冠为2021N (R/OF), 1872N (R/RF), 2242N (NR/OF)和2070N (NR/RF)。

结论:按照牙齿轮廓预备和/或执行最佳拟合参数可以减少牙冠分离的数目。对于复合材料修复体,结合方式应该首先粘接剂胶结。

临床意义:预备设计、拟合参数和胶结类型影响着复合材料冠的性能。只有按照牙齿轮廓预备和/或执行较佳的拟合参数才能避免复合材料修复体的分离;对于任何病例来说,都应首选粘接剂胶结的结合方式。

原始出处

Rosentritt M, Preis V, et al. Influence of preparation, fitting, and cementation on the vitro performance and fracture resistance of CAD/CAM crowns. J Dent. 2017 Jul 19. pii: S0300-5712(17)30172-0. doi: 10.1016/j.jdent.2017.07.006.

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1675309, encodeId=679c16e530996, content=<a href='/topic/show?id=cb8a400091' target=_blank style='color:#2F92EE;'>#CAM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4000, encryptionId=cb8a400091, topicName=CAM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=16ac27217804, createdName=whmdzju, createdTime=Wed Oct 11 17:40:00 CST 2017, time=2017-10-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=226045, encodeId=88d4226045f9, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=00501987275, createdName=130****4638, createdTime=Tue Jul 25 07:22:51 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=225998, encodeId=72d72259984f, content=好资源, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20150714/IMG55A4FADCE0F987688.jpg, createdBy=23af1632396, createdName=1dd8f26bm82(暂无匿称), createdTime=Tue Jul 25 06:17:29 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=225945, encodeId=587e22594576, content=不错的,学习了,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NdqKgfW3nMpOkC3jXxiaW2po0PtglY5ZuVjERqKADW4HyMI8bcZXWlKgH7tEP9ULBoBzuQMibia4pr1s9rQPqLvqQJ/0, createdBy=e8c02060444, createdName=中医痴, createdTime=Mon Jul 24 22:37:58 CST 2017, time=2017-07-24, status=1, ipAttribution=)]
    2017-10-11 whmdzju
  2. [GetPortalCommentsPageByObjectIdResponse(id=1675309, encodeId=679c16e530996, content=<a href='/topic/show?id=cb8a400091' target=_blank style='color:#2F92EE;'>#CAM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4000, encryptionId=cb8a400091, topicName=CAM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=16ac27217804, createdName=whmdzju, createdTime=Wed Oct 11 17:40:00 CST 2017, time=2017-10-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=226045, encodeId=88d4226045f9, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=00501987275, createdName=130****4638, createdTime=Tue Jul 25 07:22:51 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=225998, encodeId=72d72259984f, content=好资源, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20150714/IMG55A4FADCE0F987688.jpg, createdBy=23af1632396, createdName=1dd8f26bm82(暂无匿称), createdTime=Tue Jul 25 06:17:29 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=225945, encodeId=587e22594576, content=不错的,学习了,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NdqKgfW3nMpOkC3jXxiaW2po0PtglY5ZuVjERqKADW4HyMI8bcZXWlKgH7tEP9ULBoBzuQMibia4pr1s9rQPqLvqQJ/0, createdBy=e8c02060444, createdName=中医痴, createdTime=Mon Jul 24 22:37:58 CST 2017, time=2017-07-24, status=1, ipAttribution=)]
    2017-07-25 130****4638

    学习了谢谢分享

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1675309, encodeId=679c16e530996, content=<a href='/topic/show?id=cb8a400091' target=_blank style='color:#2F92EE;'>#CAM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4000, encryptionId=cb8a400091, topicName=CAM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=16ac27217804, createdName=whmdzju, createdTime=Wed Oct 11 17:40:00 CST 2017, time=2017-10-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=226045, encodeId=88d4226045f9, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=00501987275, createdName=130****4638, createdTime=Tue Jul 25 07:22:51 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=225998, encodeId=72d72259984f, content=好资源, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20150714/IMG55A4FADCE0F987688.jpg, createdBy=23af1632396, createdName=1dd8f26bm82(暂无匿称), createdTime=Tue Jul 25 06:17:29 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=225945, encodeId=587e22594576, content=不错的,学习了,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NdqKgfW3nMpOkC3jXxiaW2po0PtglY5ZuVjERqKADW4HyMI8bcZXWlKgH7tEP9ULBoBzuQMibia4pr1s9rQPqLvqQJ/0, createdBy=e8c02060444, createdName=中医痴, createdTime=Mon Jul 24 22:37:58 CST 2017, time=2017-07-24, status=1, ipAttribution=)]
    2017-07-25 1dd8f26bm82(暂无匿称)

    好资源

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1675309, encodeId=679c16e530996, content=<a href='/topic/show?id=cb8a400091' target=_blank style='color:#2F92EE;'>#CAM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4000, encryptionId=cb8a400091, topicName=CAM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=16ac27217804, createdName=whmdzju, createdTime=Wed Oct 11 17:40:00 CST 2017, time=2017-10-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=226045, encodeId=88d4226045f9, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=00501987275, createdName=130****4638, createdTime=Tue Jul 25 07:22:51 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=225998, encodeId=72d72259984f, content=好资源, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20150714/IMG55A4FADCE0F987688.jpg, createdBy=23af1632396, createdName=1dd8f26bm82(暂无匿称), createdTime=Tue Jul 25 06:17:29 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=225945, encodeId=587e22594576, content=不错的,学习了,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NdqKgfW3nMpOkC3jXxiaW2po0PtglY5ZuVjERqKADW4HyMI8bcZXWlKgH7tEP9ULBoBzuQMibia4pr1s9rQPqLvqQJ/0, createdBy=e8c02060444, createdName=中医痴, createdTime=Mon Jul 24 22:37:58 CST 2017, time=2017-07-24, status=1, ipAttribution=)]
    2017-07-24 中医痴

    不错的,学习了,谢谢分享!

    0

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